ABS Indicator Inoperative. Chevrolet PJJ 2000

For 1990-2009 cars

### Circuit Description

The Instrument Panel Cluster (IPC) turns the ABS warning indicator ON during the IPC bulb check for approximately 3 seconds when the ignition switch is turned to the ON position. If the EBCM detects a malfunction within the ABS it sends a Class 2 serial data message to the IPC in order to command the ABS warning indicator ON.

### Test Description

The number below refers to the step number on the diagnostic table.

1. This test ensures that the instrument panel cluster can operate the ABS warning indicator.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the ABS Diagnostic System Check? | -- | Go to Step 2 | Go to ABS Diagnostic System Check

2

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, select Special Functions in Instrument Panel Cluster.
4. Use the scan tool in order to command the instrument panel cluster indicators ON and OFF.

Does the scan tool command the ABS Warning Indicator ON and OFF?

--

Go to Step 3

Go to Step 4

3 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement. Did you complete the replacement? | -- | Go to ABS Diagnostic System Check | --
4 | Replace the Instrument Panel Cluster. Refer to Instrument Panel Cluster Replacement in Instrument Panel, Gauges and Console. Did you complete the replacement? | -- | Go to ABS Diagnostic System Check | --